Hmm. So, try to get more men to enroll in mainly female courses? Might work, but I doubt it. And no university anywhere frets about disciplines where males are underrepresented. Males in general are underrepresented overall at university. Oh well.
Note that OP stipulated that there were "no unwanted advances". Is this even a real problem?
How are people supposed to meet relevant mates? I mean, they could use an app or social events, but you could raise the same complaints there too.